/**
 * 维信科技
 * 练习switch选择语句的用法
 * @auther wangjh
 * @time 20180930
 * 
 * 
 */

package day02;
import java.util.Scanner;
public class TestSwitch {

	public static void main(String[] args) {
		Scanner input = new Scanner(System.in);
		int score = input.nextInt();
		switch (score) {
		case 100:
			System.out.println("优秀");
			break;
		case 90:
			System.out.println("良好");
			break;
		case 80:
			System.out.println("中等");
			break;
		default:
			System.out.println("及格");
			break;
			
		}

	}

}
